Pith Number

pith:CWN2TWMV

pith:2018:CWN2TWMVQJHEBZRQXTGWB47FH2

not attested not anchored not stored refs pending

Block matrices and Guo's Index for block circulant matrices with circulant blocks

Cristina Manzaneda, Enide Andrade, Hans Nina, Mar\'ia Robbiano

arxiv:1804.09704 v1 · 2018-04-25 · math.SP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CWN2TWMVQJHEBZRQXTGWB47FH2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:17:31.058071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

159ba9d995824e40e630bccd60f3e53e9823e43af427e8195eb7b3231fee744b

Aliases

arxiv: 1804.09704 · arxiv_version: 1804.09704v1 · doi: 10.48550/arxiv.1804.09704 · pith_short_12: CWN2TWMVQJHE · pith_short_16: CWN2TWMVQJHEBZRQ · pith_short_8: CWN2TWMV

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/CWN2TWMVQJHEBZRQXTGWB47FH2 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 159ba9d995824e40e630bccd60f3e53e9823e43af427e8195eb7b3231fee744b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "664c3909ed2ce47da844d1661cbf6798406769b07244eb64d68ab9382581dee6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2018-04-25T17:53:11Z",
    "title_canon_sha256": "4aea6f94cdbb4a47081d4dbdda64a8616d3ee36f6b447a241894b338600c0110"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.09704",
    "kind": "arxiv",
    "version": 1
  }
}